Yes, many influencer marketing platforms, such as Flinque, offer the ability to shortlist influencers based on the growth rate of their follower base. This feature can help you identify influencers whose popularity is rapidly increasing, hence expanding your reach as they grow.

In Flinque, for instance, the audience growth rate of influencers is a key part of its advanced search and filtering options:

1. Discovery Dashboard: This is a comprehensive tool that provides insights into an influencer’s growth rate. You can see information like their past and current follower counts, their growth rate over a specified time period, and more.

2. Shortlisting: After identifying the influencers with high growth rates, you can add them to your shortlist, then utilize Flinque’s campaign workflow tools to reach out and initiate collaborations.

3. Tracking & Analysis: Once you’ve initiated a campaign with an influencer, Flinque provides analytics tools to track and measure the performance and ROI of the collaborations, allowing you to see real-time growth and engagement rates.

Comparatively, other platforms may also provide similar features with differing levels of depth and analysis. The choice of platform should therefore be based on your specific needs in terms of data granularity and user experience.

In conclusion, identifying rapidly growing influencers can be a strategic move for brands, and marketing platforms like Flinque certainly make this task more efficient and accurate.